Process of producing chlorids of carbon.



No. 737,123. PATENTED AUG. 25, 1903.

- M F. J. MAGHALSKE. PROCESS OF PRODUCING GHLORIDS OF CARBON.

APPLICATION FILED SEPT. 24, 1902 N0 MODEL.

\ mm: PU'ERS no, PHOTO-\IYHO., WASHINGH'N. D r

the sides of the furnace.

- No. 737,- 12e. v

. UNIT D STATES Iatented August 25, 1903.

PATENT OFFICE.

FLORENTINE JOSEPH MAOI-IALSKE, OF CHICAGO, ILLINOIS,-ASSIGNOR OFONE-HALF TO CHARLES HERBERT LYON, OF CHICAGO, ILLINOIS.

PROCESS OF PRODUCING CHLORIDS OFCARBON.

SPECIFICATION formingpart of Letters Patent N 0. 737,123, dated August25, 1903. 1 Application filed September 2% 1902. Serial No. 124,658. (Nospecimens-l To all whom it may concern:

Be it known that I, FLORENTINE J osnrn' MAOHALSKE, a citizen of theUnited States, and a resident of the city. of Chicago, State ofIllinois, have invented a new and useful Process of Producing Chloridsof Carbon, of which the following is a full, clear, and exactdescription.

According to this process a mixture of carbonaceous substance, a chlorincompound, and an agent which will combine withthe base of the chlorincompound is heated to a high temperature, preferably by means of anelectric furnace. The chlorin liberated from its compound combines withthe heated carbon, and the resulting carbon chlorid is withdrawn and maybe condensed. The preferred charge consists of a mixture of broken coke,sodium chlorid, and silica sand. The charge should be free from water,and a non-oxidizing atmosphere is maintained in the furnace. Variouschlorids of carbon may be produced by varying the proportions of theingredients of the charge.

A suitable furnace for carrying out the process is shown in theaccompanying drawin g, in which the figure is a vertical axial section.It is to be understood that this furnace is merely illustrative andthatthe process is in no way limited to its use.

The furnace shown comprises a stack 1 of refractory non-conductingmaterial, such as fire-brick, with a lining 2 of magnesia brick. Carbonelectrodes 3 3 pass adj ustably through refractory non-conductin gsleeves-in A charging-opening 5, with suitable closure, extends throughthe top'wall. An outlet-flue 6 for the carbon chlorids rises from theupper end of the furnace. A tap-hole 7 leads from thelower part of thefurnace-chamber.

According to the preferred mode of operation a charge 8, consisting of.a. water-free mixture of broken coke, sodium chlorid, and pure silicasand is introduced into the furnace, so as to surround the ends of theelectrodes. An electric current is then passed between the electrodesand through the charge, heating the mixture to a temperature sufficientto elfect the reaction. that the high temperature first melts the so- Itis probable with the molten chlorid to liberate chlorin, which thereuponcombines with the incandes: cent coke to produce the carbon chlorid. Theresulting chlorid is delivered through the outlet-flue 6 to a condenseror chamber, andthe molten residue is withdrawn through the taphole. Airshould be excluded from the furnace during the operation. 7

Various chlorids of carbon may be produced by varying the proportions ofthe ingredients of the charge. Typical-reactions may be represented bythe followingequations:

Sulfur chlorid may be produced simultaneously with the carbon chloridsby adding sulfur to the charge. A typical reaction in this case may berepresented by the following equation:

It will be seen from these reactions that the silica serves -to bind thebase of the chlorin compound.

' It will be noted that the charge employed for the production ofchlorids of carbon entirely differs from that used for the productionofsilicon carbid,in which a small amount of sodium chlorid is usuallyadded to the mixture of carbon and silica to serve as a flux and renderthe mass porous. In this process the chlorin compound is used in muchlarger proportion, being a principal ingredient of the charge, as willbe seen from the equations represesenting the reactions. The temperaturerequisite for this process is also lower than that necessary fortheproduction of silicon carbid, being below 2,000 centigrade. Anelectric current of five hundred amperes at a potential difference ofsixty volts is sufficient for a furnace of the usual size. Theproduction of silicon carbid re quires, according to Acheson, atemperature above 4,000 Fahrenheit, and, according to dium chlorid andthat the silica then reacts Moissan, a temperature sufficient tovaporize carbon and silica.

I claim- 1. The process of producing chlorids of carbon, which consistsin heatinga mixture of a carbonaceous substance, a chlorin compound andan agent which will combine with the base of the chlorin compound, to atemperature sufficient to effect the reaction, as set forth.

2. The process of producing chlorids of carbon, which consists inheating a mixture of a carbonaceous substance, a chlorin compound andsilica'to a temperature sufficient to effect the reaction, as set forth.

3. The process of producing chlorids of carbon, which consists inheating a mixture of carbon, an alkali chlorid and silica to atemperature sufficient to effect the reaction, as set forth.

4. The process of producing chlorids of carbon, which consists inheating a mixture of carbon, sodium chlorid and silica to a temperaturesufficient to effect the reaction, as set forth.

5. The process of producing chlorids of carbon, which consists inheating a mixture of coke, sodium chlorid and silica sand to a temperatu re sufficient to effect the reaction, as set forth.

6. The process of prod ucin; chlorids of carbon, which consists inelectrically heating a mixture of carbon, sodium chiorid and silica to atemperature su fiicient to effect the reac tion, as set forth.

